In 1802, French-American chemist and industrialist Éleuthère Irénée du Pont de Nemours founded DuPont de Nemours, Inc., more commonly known as DuPont. The company's emergence as a significant provider of gunpowder was a pivotal moment in Delaware's development.

DuPont's scientists created various compounds, most notably Freon (chlorofluorocarbons), for the refrigerant business, and many polymers, including Vespel, neoprene, nylon, Corian, Teflon, Mylar, Kapton, Kevlar, Zemdrain, M5 fiber, Nomex, Tyvek, Sorona, Corfam, and Lycra, throughout the 20th century. Synthetic paints and pigments, such as ChromaFlair, were also created by the company.

In 2015, DuPont and the Dow Chemical Company agreed to a reorganization plan in which the two businesses would merge and split into three. On August 31, 2017, DuPont acquired Dow and changed its name to DowDuPont.

Eighteen months later, DowDuPont separated its material science and agribusiness divisions to form Dow Chemical and Corteva, respectively, and reverted to the DuPont name to focus on its specialty products. It was the largest chemical corporation in the world before the spinoffs.

The combined companies' estimated value is $130 billion. As was the case before the merger, DuPont's current headquarters are in Wilmington, Delaware, where the company was initially formed.

Founded: 1802

Headquarters: Wilmington, Delaware

Website: https://www.dupont.com/

Westlake Chemical is an internationally renowned manufacturer and supplier of polymers and petrochemicals in various consumer and industrial markets. The company operates in two vertical segments, Olefins and Vinyl, and is an integrated vinyl manufacturer heavily industrially integrated into polyvinyl chloride (PVC) construction products.

Westlake Chemical was founded in 1986 by T. T. Chao, a prominent figure in the global petrochemical industry, after the first acquisition of a polyethylene plant in Lake Charles, Louisiana.

Westlake purchased U.S. chlor-alkali producer Axiall Corporation for US$3.8 billion in 2016. Westlake then acquired the United States building products business of Boral for $2.2 billion in June 2021.

Founded: 1986

Headquarters: Houston, Texas

Website: https://www.westlake.com/

Celanese Corporation (formerly Hoechst Celanese) is a Fortune 500 specialty materials company headquartered in Irving, Texas, USA. It owns 25 manufacturing plants and six research centers in 11 countries, mainly in North America, Europe and Asia.

Celanese provides products and services to industries ranging from aerospace, agriculture, consumer electronics, construction, coatings, consumer goods, chemicals, energy, manufacturing, pharmaceuticals and pharmaceuticals, oil, gas to mining.

Celanese took the 7th place on FoodTalks' Global Top 20 Food Preservative Companies list in 2021.

Founded: 1918

Headquarters: Irving, Texas

Website: https://www.celanese.com/

Avient Corporation, formerly PolyOne Corporation, is a global manufacturer and supplier of specialty materials. It was established in 2000 by the merger of Gun Company (Gun) and M.A. Hanna Company. Polyone manufactures and markets various forms of PVC, often used in wires and cables, gaskets, medical devices, and weather protection.

Avient Corporation possesses 60 manufacturing facilities and nine distribution centers in North America, Asia, Europe, and South America, specializing in the distribution of polymer additives, advanced chemicals, polymer dyes, thermoplastic elastomers, vinyl formulations, specialty polymer formulations, polymer technology solutions, screen printing and marking inks, and polymers.

Avient Corporation struck a deal with Royal DSM to purchase the DSM Protective Materials business for $1.485B in April 2022.

Founded: August 31, 2000

Headquarters: Avon Lake, Ohio

Website: https://www.polyone.com

JM Eagle is an American company that manufactures and markets PVC and HDPE pipes. It owns 22 manufacturing plants in North America that manufacture a variety of pipes and fittings for various industries, including plumbing, electricity, utilities, natural gas, irrigation, drinking water, sewerage, and sewerage.

JM Eagle was born from mergers and acquisitions in 1982 when Formosa Plastics acquired eight plants, including plastic pipe in Johns Manville, and established JM Manufacturing, based in Livingston, New Jersey.

JM Eagle joins in various philanthropic activities, specifically where polyvinyl chloride (PVC) piping can assist in facilitating the acquisition of natural resources in underprivileged communities.

Founded: 1982

Headquarters: Los Angeles, California

Website: https://www.jmeagle.com/

Charlotte Pipe and Foundry was founded in 1901 and has grown exponentially. The company is headquartered in Charlotte, North Carolina, and has seven manufacturing facilities.

John Biggers was appointed President of Charlotte Pipe and Foundry Company by the Board of Directors on November 15, 2022, to take office on January 1, 2023. Hooper Hardison, now the president and CEO, will continue in that position. The new plant in Stanly County, which is set to open in the third quarter of 2023, will replace the company's foundry in the heart of Charlotte.

Charlotte Pipe and Foundry specializes in providing pipes and fittings for residential and commercial buildings. Their products suit plumbing, sewerage, irrigation, and residential construction.

Founded: 1901

Headquarters: Charlotte, North Carolina

Website: https://www.charlottepipe.com

Occidental is an international energy and chemical company with assets in the United States, Latin America, the Middle East and Africa. OxyChem is the plastics and chemicals division of the company.

OxyChem manufactures PVC resin, vinyl chloride monomer (VCM) and its precursor ethylene dichloride (EDC). OxyChem owns and operates 22 plants in the United States and has international operations in Canada and Chile.

The company's fully-owned subsidiary, OxyChem, produces PVC resins, chlorine, and sodium hydroxide (caustic soda) for many industries, including plastics, medicine, and water purification. In addition to calcium chloride, sodium silicates, chlorine cyanuric acid (isocyanurate), and caustic potash, the company also produces a variety of chlorinated organics.

Production for OxyChem occurs in three different countries: the USA, Canada, and Chile. Armand Products Company, which distributes potassium carbonate and potassium bicarbonate, is owned by OxyChem in partnership with Church & Dwight.

Founded: June 1909

Headquarters: Dallas, Texas

Website: https://www.oxy.com

Cresline Plastic Pipe is the oldest pipe company in the United States, founded in 1949. The company offers a full range of PVC pipe products for various applications throughout the United States.

The Cresline Plastic Pipe Co., Inc. has been in business longer than any privately held plastic pipe manufacturer. The Cresline Team comprises some of the most seasoned experts in the industry. Cresline is a family of companies that produces polyethylene, PVC, and FlowGuard Gold® CPVC pipe for the plumbing, irrigation, water well, hardware, industrial, and municipal markets and provides industry-leading coast-to-coast service.

Founded: 1949

Headquarters: Evansville, Indiana
Website: https://www.cresline.com

Established in 1982, Diamond Plastics Corp. It specializes in producing large-diameter PVC pipes, mainly used in the industrial sector. According to the company's press statement, Mitsubishi International of New York owns one-third of Diamond Plastics, and Boyd Corp. of Houston owns the remaining two-thirds. PVC pipe is extruded for municipal, water/sewer, and agricultural applications.

With seven manufacturing facilities in Grand Island, Nebraska, and Lubbock, Texas, Diamond Plastics has become a leader in producing two-piece tubing, internal joint restraints, and rigid wall PVC tubing for gravity flow through 60 units. diameter inches.

Founded: 1982

Headquarters: Rd Grand Island, Nebraska

Website: https://www.dpcpipe.com